Geology Reference
In-Depth Information
Figure 10 The possible climatic influence of DMS of marine biogenic origin
(Adapted from Charlson et al., 1987.
16
)
strengths and the controlling factors remain important unresolved issues
in sulfur biogeochemistry.
DMS concentrations in the remote marine troposphere vary in the
range of 0.03-32 nmol m
3
. Not surprisingly and as with the seawater
concentrations, considerable temporal and geographic disparities occur.
Furthermore, atmospheric DMS concentrations exhibit diurnal varia-
tions, with a night time maximum and an afternoon minimum consistent
with a photochemical sink. Whereas oxidation involves HO free radicals
